青藏高原西南部湖泊沉积正构烷烃及其单体δD的气候意义
查看参考文献64篇
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文摘
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对青藏高原西南部-南部3个不同气候区9个湖泊的表层沉积物正构烷烃及其单体氢同位素分布特征进行了分析, 并与流域植被的正构烷烃和气候要素进行了对比. 结果表明, 湖泊表层沉积物的n-C_(23)主要来自水生植物, n-C_(27)~n-C_(33)来自陆生高等植物. 湖泊表层沉积物正构烷烃 n-C_(27)~n-C_(33)平均碳链长度(ACL_(27~33))与年均降水量正相关. 陆生植物来源的高碳链n-C_(29)和n-C_(31)氢同位素比值分布范围分别为-169‰~-214‰和-185‰~-226‰, 与年均降水量反相关, 但与大气降水的年均δD 变化一致, 且n-C_(31)的δD 值与生长季节(5~9月)大气降水平均δD 值相关性较强(R~2=0.74). 水生植物来源的n-C_(23)的δD值较陆生n-C_(31)偏高(平均约27‰), 体现了青藏高原西南部-南部干旱-半干旱地区湖水由于强蒸发作用引起的较大气降水富集δD 值的特点. ε_(n-C_(25~31)/p)(高碳链表观分馏)平均值为-95‰, 较欧洲湿润地区明显偏高(-128‰), 其中ε_(n-C_(31)/p)约为-116‰(SD=9)较恒定, 进一步说明湖泊表层沉积物n-C_(31)对于环境变化具有较好的指示作用. |
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来源
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科学通报
,2014,59(19):1892-1903 【核心库】
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关键词
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正构烷烃
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湖泊沉积
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氢同位素比值
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降水
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青藏高原
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地址
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1.
中国科学院青藏高原研究所, 中国科学院青藏高原环境变化与地表过程实验室, 北京, 100101
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中国科学院青藏高原研究所, 青藏高原环境变化与地表过程实验室中国科学院, 北京, 100101
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中国科学院广州地球化学研究所, 有机地球化学国家重点实验室, 广州, 510640
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(武汉)中国地质大学地球科学学院, 武汉, 430074
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0023-074X |
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基金
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国家科技基础性工作专项重点项目
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国家自然科学基金重大项目
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国家重大科学研究计划
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中国科学院战略性先导科技专项
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文献收藏号
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CSCD:5196674
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参考文献 共
64
共4页
|
|
1.
Eglinton T I. Molecular proxies for paleoclimatology.
Earth Planet Sci Lett,2008,275:1-16
|
CSCD被引
47
次
|
|
|
|
|
2.
Meyers P A. Applications of organic geochemistry to paleolimnological reconstructions: A summary of examples from the Laurentian Great Lakes.
Org Geochem,2003,34:261-289
|
CSCD被引
219
次
|
|
|
|
|
3.
Glinton G E. Leaf epicuticular waxes.
Science,1967,156:1322-1335
|
CSCD被引
187
次
|
|
|
|
|
4.
Ficken K J. An n-alkane proxy for the sedimentary input of submerged/floating freshwater aquatic macrophytes.
Org Geochem,2000,31:745-749
|
CSCD被引
197
次
|
|
|
|
|
5.
Cranwell P A. Lipids of aquatic organisms as potential contributors to lacustrine sediments-II.
Org Geochem,1987,18:513-527
|
CSCD被引
154
次
|
|
|
|
|
6.
Han J. Hydrocarbon distribution of algae and bacteria and microbiologica1 activity in sediments.
Proc Natl Acad Sci USA,1969,64:436-443
|
CSCD被引
31
次
|
|
|
|
|
7.
Huang Y S. Large-scale hydrological change drove the late Miocene C_4 plant expansion in the Himalayan foreland and Arabian Peninsula.
Geology,2007,35:531-534
|
CSCD被引
23
次
|
|
|
|
|
8.
Pagani M. Arctic hydrology during global warming at the Palaeocene/Eocene thermal maximum.
Nature,2006,442:671-675
|
CSCD被引
19
次
|
|
|
|
|
9.
Schefuss E. Climatic controls on central African hydrology during the past 20000 years.
Nature,2005,437:1003-1006
|
CSCD被引
23
次
|
|
|
|
|
10.
Hou J Z. Can sedimentary leaf waxes record D/H ratios of continental precipitation? Field, model, and experimental assessments.
Geochim Cosmochim Acta,2008,72:3503-3517
|
CSCD被引
29
次
|
|
|
|
|
11.
Nishimura M. Possible origin of n-alkanes with a remarkable even to odd predominance in recent sediments.
Geochim Cosmochim Acta,1986,50:299-305
|
CSCD被引
19
次
|
|
|
|
|
12.
Zheng M. Characterization of the no n-volatile organic compounds in the aerosols of Hong Kong identification, abundance and origin.
Atmos Environ,1997,31:227-237
|
CSCD被引
21
次
|
|
|
|
|
13.
Cheng Y. Spatial and diurnal distributions of n-alkanes and n-alkan-2-ones on PM_(2.5) aerosols in the Lower Fraservalley, Canada.
Atmos Environ,2006,40:2706-2720
|
CSCD被引
3
次
|
|
|
|
|
14.
Jeng W L. Higher plant n-alkane average chain length as an indicator of petrogenic hydrocarbon contamination in marine sediments.
Mar Chem,2006,102:242-251
|
CSCD被引
20
次
|
|
|
|
|
15.
Sun Q. Alkanes, compound-specific carbon isotope measures and climate variation during the last millennium from varved sediments of Lake Xiaolongwan, northeast China.
J Paleolimn,2013,50:331-344
|
CSCD被引
13
次
|
|
|
|
|
16.
Simoneit B R T. Organic matter of the troposphere-Ⅲ. Characterization and sources of petroleum and pyrogenic residues in aerosols over the western United States.
Atmos Environ,1984,18:51-67
|
CSCD被引
35
次
|
|
|
|
|
17.
Simoneit B R T. Organic matter of the troposphere-V. Application of molecular marker analysis to biogenic emissions into the troposphere for source reconciliations.
J Atmos Chem,1989,8:251-275
|
CSCD被引
13
次
|
|
|
|
|
18.
Hinrichs K U. Late Quaternary paleoenvironmental conditions indicated by marine and terrestrial molecular biomarkers in sediments from the Santa Barbara basin.
Proceedings of the Fourteenth Annual Pacific Climate Conference,1997:1-9
|
CSCD被引
1
次
|
|
|
|
|
19.
Zhang Z H. A hydrocarbon biomarker record for the last 40 kyr of plant input to Lake Heqing, southwestern China.
Org Geochem,2004,35:595-613
|
CSCD被引
19
次
|
|
|
|
|
20.
Zheng Y H. Lipid biomarkers in the Zoige-Hongyuan peat deposit: Indicators of Holocene climate changes in West China.
Org Geochem,2007,38:1927-1940
|
CSCD被引
37
次
|
|
|
|
|
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